So I take a backup of my computer and I have some BitCoins in there. What will happen to it all if I restore the backup with the same data? Obviously there will be a bug, as the same money cannot exist two places at a time right?

Just curious to what is going to happen.

<helo> funny that this proposal grows the maximum block size to 8GB, and is seen as a compromise<helo> oh, you don't like a 20x increase? well how about 8192x increase?<JackH> lmao

As matt.collier said, you don't want to use the same wallet at multiple location.

The reason is that Bitcoin will generate random new addresses when you make transactions. So even if you started with the same wallet, they will become different with time. You should really avoid that!